伞树属（Cecropia）又称蚁栖树属，是荨麻科下的一个属，大约有25种，都是生长在南美洲和中美洲的热带地区，是热带雨林的组成树种之一，掌状复叶，直径为30-40厘米，由7-11个小叶组成。

以前有的分类法将伞树属植物列入桑科，1981年的克朗奎斯特分类法单独分出一个科，列在荨麻目中，1998年根据基因亲缘关系分类的APG 分类法将本科放到蔷薇目中，2003年经过修订的APG II 分类法不承认这个科，将伞树属归入荨麻科中。

最新研究证明Cecropia glazioui的树叶在鼠类实验中具有抗抑郁的功能。

Cecropia is a Neotropical genus consisting of sixty-one recognized species with a highly distinctive lineage of dioecious trees. The genus consists of pioneer trees in the more or less humid parts of the Neotropics, with the majority of the species being myrmecophytic. Berg and Rosselli state that the genus is characterized by some unusual traits: spathes fully enclosing the flower-bearing parts of the inflorescences until anthesis, patches of dense indumentums (trichilia) producing Mullerian (food) at the base of the petiole, and anthers becoming detached at anthesis. Cecropia is most studied for its ecological role and association with ants. Its classification is controversial; in the past it has been placed in the Cecropiaceae, Moraceae (the mulberry family), or Urticaceae (the nettle family). The modern Angiosperm Phylogeny Group system places the "cecropiacean" group in the Urticaceae.